Merge #14051: [Tests] Make combine_logs.py handle multi-line logs

16e288acdd test padding non micro timestamps (John Newbery)
995dd89d88 [Tests] Make combine_logs.py handle multi-line logs (John Newbery)

Pull request description:

  combine_logs.py currently inserts additional newlines into multi-line
  log messages, and doesn't color them properly. Fix both of those.

Tree-SHA512: dbe2f3ecc7cfbc95ee4350e648d127538c79cb6555257d4aeec12fe3d159366742b68e90e620c8ed7219a44b973395c7e5929ba374fae115fbee25560db645f6

test/functional/combine_logs.py

@@ -13,7 +13,7 @@ import re
 import sys
 
 # Matches on the date format at the start of the log event
-TIMESTAMP_PATTERN = re.compile(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{6}Z")
+TIMESTAMP_PATTERN = re.compile(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{6})?Z")
 
 LogEvent = namedtuple('LogEvent', ['timestamp', 'source', 'event'])
 
@@ -75,11 +75,17 @@ def get_log_events(source, logfile):
                 if time_match:
                     if event:
                         yield LogEvent(timestamp=timestamp, source=source, event=event.rstrip())
-                    event = line
                     timestamp = time_match.group()
+                    if time_match.group(1) is None:
+                        # timestamp does not have microseconds. Add zeroes.
+                        timestamp_micro = timestamp.replace("Z", ".000000Z")
+                        line = line.replace(timestamp, timestamp_micro)
+                        timestamp = timestamp_micro
+                    event = line
                 # if it doesn't have a timestamp, it's a continuation line of the previous log.
                 else:
-                    event += "\n" + line
+                    # Add the line. Prefix with space equivalent to the source + timestamp so log lines are aligned
+                    event += "                                   " + line
             # Flush the final event
             yield LogEvent(timestamp=timestamp, source=source, event=event.rstrip())
     except FileNotFoundError:
@@ -98,7 +104,11 @@ def print_logs(log_events, color=False, html=False):
             colors["reset"] = "\033[0m"     # Reset font color
 
         for event in log_events:
-            print("{0} {1: <5} {2} {3}".format(colors[event.source.rstrip()], event.source, event.event, colors["reset"]))
+            lines = event.event.splitlines()
+            print("{0} {1: <5} {2} {3}".format(colors[event.source.rstrip()], event.source, lines[0], colors["reset"]))
+            if len(lines) > 1:
+                for line in lines[1:]:
+                    print("{0}{1}{2}".format(colors[event.source.rstrip()], line, colors["reset"]))
 
     else:
         try: